Modified Atmosphere Packaging or MAP is one of today’s most significant technologies for extending shelf-life for a wide range of food products. MAP is based on alteration of the gaseous environment surrounding the product to compensate for the natural respiration of the product itself, resident micro organisms, as well as the packaging material.

The existing air is replaced with a mixture of CO2, (Carbon Dioxide) and N2, (Nitrogen) which helps inhibit the growth of aerobic bacteria and slows the natural oxidation process. A typical mixture would be 30% Carbon Dioxide and 70% Nitrogen, however, this can vary greatly, depending on the product.